| UTR Pro Tennis Series - Ricany | 2021/09/10 07:30 | Michalis Sakellaridis v Andrey Chepelev | 0-6,2-6 |
| UTR Pro Tennis Series - Ricany | 2021/09/08 12:00 | Michalis Sakellaridis v Lawrence Bataljin | 2-6,3-5 |
| UTR Pro Tennis Series - Ricany | 2021/09/07 07:30 | Michalis Sakellaridis v Yanais Laurent | 2-6,3-5 |
| UTR Pro Tennis Series - Ricany | 2021/09/06 12:00 | Jan Satral v Michalis Sakellaridis | 6-2,6-2 |
| ITF M15 - Bad Waltersdorf | 2021/08/30 09:00 | Alberto Morolli v Michalis Sakellaridis | 6-3,6-3 |
| ITF M15 - Bad Waltersdorf | 2021/08/29 09:00 | Alan Gleeson v Michalis Sakellaridis | 3-6,6-7 |
| ITF M15 - Bad Waltersdorf | 2021/08/23 07:00 | Michalis Sakellaridis v Fletcher Scott | 1-6,1-6 |
| ITF M15 - Warmbad-Villach | 2021/08/16 12:30 | Leonardo Rossi v Michalis Sakellaridis | 7-6,6-4 |
| UTR Pro Tennis Series - Ricany | 2021/09/11 07:30 | Dominik Langmajer v Alec Adamson | 3-6,6-3,6-3 |
| ITF M25 - Ricany | 2021/08/29 12:00 | Dominik Langmajer v Martin Machala | 3-6,3-6 |
| ITF M25 - Poznan | 2021/08/22 08:00 | Dominik Langmajer v Marcelo Zormann | 4-6,1-6 |
| ITF M15 - Lodz | 2021/08/15 11:00 | Omar Brigida v Dominik Langmajer | 6-1,6-4 |
| ITF M15 - Gdynia | 2021/08/08 08:00 | Olaf Pieczkowski v Dominik Langmajer | 6-2,6-1 |
| ITF M25 - Grodzisk Mazowiecki | 2021/08/01 09:55 | Dominik Langmajer v Yujiro Onuma | 3-6,3-6 |
| ITF M15 - Castelo Branco | 2021/07/26 11:00 | Adan Freire Da Silva v Dominik Langmajer | 6-3,6-2 |
| ITF M15 - Castelo Branco | 2021/07/25 16:00 | Mark Owen Endler v Dominik Langmajer | 3-6,6-2,5-10 |